Journal of Inorganic and General Chemistry
ARTICLE
Zeitschrift für anorganische und allgemeine Chemie
Experimental and computational details including all spectra and
ORTEP representations of all experimentally studied species are given
in the Supporting Information.
The highly viscous, champagne-colored room temperature
ionic liquid [nBu3MeN][B(OMe)3(CN)] can be obtained with
a yield of Ͼ 99%. m.p. –51 °C). From this IL it was
possible to isolate a few crystals of the double salt
[nBu3MeN]2{[B(OMe)3(CN)](CN)} after three days that crys-
Supporting Information (see footnote on the first page of this article):
Supporting information includes experimental details and all spectra
tallized in the orthorhombic space group Aba2 with three inde- (NMR, IR, Raman).
pendent [nBu3MeN]2{[B(OMe)3(CN)](CN)} moieties in the
asymmetric unit. Only one independent ion pair of the double
Acknowledgements
salt [nBu3MeN]2{[B(OMe)3(CN)](CN)} is shown in Figure 3.
There are no significant interionic interactions as there
are no close interionic distances. The shortest inter-
anionic [B(OMe)3(CN)]–···CN– distance is 5.9 Å. The
[B(OMe)3(CN)]– ion adopts a slightly distorted tetrahedral ar-
rangement (all angles around the boron atoms are between
107–111°) with almost local C3 symmetry [(B1–C1–N1) =
177.7(4)°]. Both the B–C [1.700(5) Å] and B–O distances (av.
1.442 Å) are in the typical range of single bonds, although the
more polar B–O bonds are significantly shorter than the B–C
bond. The CN bond length of the free cyanide is slightly
shorter than the CN ligand distance [cf. 1.096(5) vs.
1.149(5) Å].
The authors thank Deutsche Forschungsgemeinschaft (DFG SCHU
1170/9–2), especially the priority program SPP 1708 for financial sup-
port (Philip Stoer).
Keywords: Pseudohalide; Borates; Ionic liquids; Structure;
Synthesis
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Experimental Section
Caution! HCN / cyanides are highly toxic! Appropriate safety pre-
cautions (HCN detector, gas mask, low temperatures) should be taken.
Z. Anorg. Allg. Chem. 0000, 0–0
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